Distribution transformer	
	
Rated power		kVA (from power requirement calculation)	
Number of transformer		(from power requirement calculation)	
Primary rated voltage		kV (specification by electrical utility company)	
Secondary rated voltage (no-load)		V (low-voltage level)	
Primary winding tapping			Yes		No	
Rated short-circuit voltage			4 %		6 %	
Vector group			DYN 5		DYN 11	
No-load losses and noise			
	Reduced (advisable)			Not reduced	
Maximum ambient temperature		°C (standard 40 °C)	
Cast-resin transformer version	
	Basic			Standard	
Accessories and monitoring equipment			
	Systems for alarms and tripping			System for fan control	
	Acoustic emission insulation			Extra ventilation at the transformer	
	Make-proof earthing switch			Partial discharge less than 5pC at twice the rated voltage	
			
Oil-immersed distribution transformer	
	Sealed			Mineral oil	
				Diester oil	
				Hermetic	
	Expansion tank			Mineral oil	
				No	
Accessories and monitoring equipment			
	Dial thermometer with 2 contacts			Transformer protection block	
	Pressure switch, 2 contacts			Pressure relief valve	
	Buchholz relay (expansion tank)			Desiccant breather 
(expansion tank))	
Corrosion protection			
	Standard (0,125 mm)			Hot-galvanized	
	Hot-galvanized and additional coating				
Primary connection			
	Standard porcelain bushings			Outside cone – device connection	
Secondary connection with transformer connection terminals and covers	
	For indoor installation			For outdoor installation	

With the completed list you have gained an overview of the project.
Do you need detailed information e.g. about concept development or budget estimation?
With the data contained in the checklist, contact your responsible TIP contact person:	
Totally Integrated Power supports electrical designers in different planning stages with software tools, Revit files for Building Information Modeling (BIM), tender specification texts, planning and application manuals and professional consulting by our experienced technical specialists in many countries: www.siemens.com/tip-cs

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